Oil consumption
Just found this on the web: since 2004, the Toyota Camry owner's manual has included what many owners would consider a surprising specification: It says the Camry can consume up to 1 liter of oil per 1,000 kilometers, or 1.1 quarts per 600 miles
I worked 42 years in the auto industry and a new engine's oil consumption had to be worse than 1 quart per 600 miles before it would be replaced under warranty. No consumer wants to hear that but it was and apparently still is the policy. That is why manufacturers owners manuals call for checking the oil at each gas fill up. Now that rate of oil consumption is rare, but it can happen due to tolerance stack ups. So, if you check your oil often and top off as needed, drive in peace. If all of a sudden your oil consumption rises rapidly, look for a cause. A gradual increase in oil consumption over the miles is not a crisis. Just remember, unless the consumption is worse than 1 quart/600 miles, it is in new car specs!